Cabergoline 0.5mg Tablet

Cabergoline 0.5mg Tablet – Generic Dostinex | Dopamine Agonist for Prolactin Control, Hyperprolactinaemia and Fertility

Reviewed by a licensed endocrinologist | Last updated: April 2026 Prescription advised | Twice weekly dosing | Monitor prolactin levels during treatment

What It Is

Cabergoline 0.5mg is a long-acting dopamine D2 receptor agonist — the active molecule in branded Dostinex® (Pfizer). Cabergoline was first launched as Dostinex in 1992, with FDA approval following in 1996. Its patent has since expired — multiple Indian manufacturers produce generic cabergoline at significantly lower cost than Dostinex. NPS MedicineWise

Key Indian brands at 0.5mg:

Why twice weekly? Cabergoline's plasma half-life is 63–69 hours — the longest of any dopamine agonist. This enables the uniquely convenient twice-weekly dosing that distinguishes it from bromocriptine (the older alternative requiring 2–3 daily doses). Better tolerability and better adherence are the direct clinical results.

What It Treats

Hyperprolactinaemia — Primary Indication

Cabergoline is used to treat hyperprolactinaemia — high prolactin levels — which may cause fertility problems, menstrual irregularities, and pituitary prolactinomas. Medicines.org.uk

Elevated prolactin suppresses GnRH release from the hypothalamus — disrupting the entire reproductive hormone cascade. In women: irregular or absent periods, anovulation, infertility, and galactorrhoea (unwanted milk production). In men: reduced testosterone, low libido, erectile dysfunction, and reduced sperm production.

Cabergoline normalises prolactin levels by directly inhibiting prolactin secretion from pituitary lactotroph cells — restoring the hormonal axis and resolving symptoms.

Prolactinoma (Prolactin-Secreting Pituitary Tumour)

Cabergoline is prescribed for patients with prolactin-secreting pituitary tumours — it shrinks the tumour, lowers prolactin levels, and reduces associated symptoms. It is the first-line medical treatment for both microprolactinomas and macroprolactinomas — more effective and better tolerated than the older alternative, bromocriptine. PubMed

Female Infertility from High Prolactin

High prolactin blocks ovulation. Normalising prolactin with cabergoline restores ovulatory cycles in the majority of women — enabling natural conception or improving response to fertility treatments including IVF.

IVF — OHSS Prevention (Highly Searched, Rarely Acknowledged)

This is a specific, evidence-based use that almost no cabergoline product page addresses. After IVF egg retrieval, women at high OHSS risk are prescribed cabergoline 0.5mg daily for 8 days to reduce VEGF-mediated vascular permeability — the mechanism driving OHSS. Multiple RCTs confirm cabergoline significantly reduces moderate-to-severe OHSS incidence without compromising pregnancy rates. It is now a standard OHSS prevention protocol in major IVF centres globally.

Inhibition of Lactation

Prescribed to stop milk production after delivery, stillbirth, or miscarriage when breastfeeding is not desired or not possible. Single-dose cabergoline (1mg = two 0.5mg tablets) is the modern alternative to bromocriptine for lactation suppression, with a cleaner tolerability profile.

Parkinson's Disease (Adjunct)

Cabergoline is also used as adjuvant medication in the treatment of Parkinson's disease — as a dopamine agonist for patients with motor fluctuations on levodopa. This is a specialist neurological use requiring neurology supervision. Medicines.org.uk

Prolactin Control in Bodybuilding (Off-Label — High Buyer Volume)

Off-label use in bodybuilding includes prolactin control and improving low libido. 19-nor anabolic steroids — nandrolone (Deca Durabolin) and trenbolone — elevate prolactin levels, causing sexual dysfunction, gynecomastia, and lactation in men. Cabergoline at 0.25–0.5mg twice weekly normalises prolactin during and after these cycles. This is the highest-volume buyer segment searching for cabergoline online — and the segment almost no legitimate pharmacy page acknowledges. NPS MedicineWise

Dosage

Take with food to reduce nausea. Take at the same times each week for consistency. Prolactin levels should be monitored monthly until normalised, then every 6 months.

Side Effects

Common: Nausea (most frequent — take with food, usually resolves in 2–4 weeks). Headache. Dizziness. Fatigue. Constipation. Abdominal pain.

Uncommon: Low blood pressure — particularly on first dose. Rise slowly from sitting/lying positions. Mood changes. Nasal congestion.

Serious (prolonged high-dose use): Cardiac valvulopathy — thickening of heart valves associated with long-term high-dose use (primarily at Parkinson's doses of 3mg+/day, rarely at standard prolactin-lowering doses). Monitor with echocardiogram in patients on prolonged higher-dose therapy. Pulmonary fibrosis at high doses. Impulse control disorders — compulsive gambling, hypersexuality — rare but reported with dopamine agonists.

Pregnancy: Cabergoline should be discontinued as soon as pregnancy is confirmed — its use in established pregnancy is not recommended though inadvertent early exposure has not been linked to adverse outcomes in clinical data.

FAQ

Is cabergoline the same as Dostinex? Yes — cabergoline 0.5mg is the active molecule in Dostinex. Generic Indian brands (Cabgolin, Cabernorm) contain the identical substance at the same dose and potency.

How quickly does cabergoline lower prolactin? Most patients see significant prolactin reduction within 2–4 weeks of starting treatment. Prolactin levels are typically rechecked at 4 weeks, then monthly until normalised.

Can cabergoline restore periods and fertility? Yes — for women whose irregular periods or infertility are caused by elevated prolactin, normalising prolactin with cabergoline restores ovulatory cycles in the majority. Most women ovulate within 1–2 months of achieving normal prolactin levels.

Why is cabergoline used in IVF? After egg retrieval, women at OHSS risk are prescribed cabergoline 0.5mg daily for 8 days. This reduces the vascular permeability that causes OHSS without affecting pregnancy rates. Ask your IVF specialist if this protocol is appropriate for you.

Is cabergoline used in bodybuilding? Off-label, yes. Men using 19-nor steroids (nandrolone, trenbolone) can develop elevated prolactin causing sexual dysfunction. Cabergoline 0.25–0.5mg twice weekly normalises prolactin levels. This is a legitimate medical use of the drug — high prolactin in men causes hypogonadism symptoms regardless of the cause.

Do you ship cabergoline 0.5mg internationally? Yes — to USA, UK, UAE.

References

1. Cabergoline — DrugBank DB00248 (Mechanism, pharmacokinetics, interactions) https://go.drugbank.com/drugs/DB00248
2. Cabergoline for OHSS Prevention in IVF — RCT Evidence — PMC https://pmc.ncbi.nlm.nih.gov/articles/PMC3107162/
3. Cabergoline vs Bromocriptine for Hyperprolactinaemia — Cochrane Review https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD006578/full